Make A Variable That Can Hold More Than 1 Piece Of Data?
Mar 9, 2009
How do i make a variable that can hold more than 1 piece of data. I wan't a variable that can keep 4 number in it. When i count them in using a for loop the only thing i have after it is finished is the last number counted in by the for loop.
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Mar 16, 2010
Is it possible to make a variable hold a reference to an integer instead of copying its value when using integerVariable = integerValue ?
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Feb 28, 2009
I use a simple for each loop toi grab a piece of data from a regex like:
[Code]...
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May 12, 2009
I would like to know how to declare a variable that holds bits.
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Mar 3, 2012
i am reviewing variabes, and just wondering any variables that can be used in math to hold a value this big =)
[Code]...
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Nov 17, 2010
How does the GC dispose objects created in the following 2 scenarios?
1)
Private Function DoSomething() As Boolean
Return New DatabaseManager().Insert()
End Function
2)
Private Function DoSomething() As Boolean
Dim mngr As New DatabaseManager()
Return mngr.Insert()
End Function
In Option 1, I don't create local variable to hold the reference of the object. In Option 2, I hold the reference in local variable.What option is better and why? (if any)
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Oct 28, 2010
What's best practice (in VB.Net):
Function GetSomething() as String
GetSomething = "Here's your string"
End Function
or
Function GetSomething() as String
Dim returnString as String = "Here's your string"
Return returnString
End Function
Obviously, neither of these implementations make any sense, but they're just meant to illustrate my point. Is there anything to be gained by using GetSomething itself to store the return value instead of declaring returnString locally and then returning that (does it avoid having an extra string allocated/instantiated - and if so, are there any performance/memory benefits)?
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Nov 14, 2010
So I do not know at design time if the var ms is going to be a stringreader or a memorystream. So I am trying to do basically this:
Dim ms as object = myfunction...
Dim mytype As Type = ms.GetType
Dim returnedobject = ser.Deserialize(CType(ms, mytype))
But I get an error saying "type mytype is not defined". How can I do this?
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Aug 2, 2009
I have a program that simply checks if the account number and pass word match. And if not it allows you to create it. But i have no idea on how to create something that will hold the data and will allow the user to add and remove sets of data.
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Sep 15, 2011
I am trying to import a text file into a data table using VB.NET. I need to loop thru each line of the text file and put certain elements of that line in a new row of the data table. The line may contain 50 elements, but I only need to get 15 of them. The very first line is a header row, which contains "File Name", "Object Name", "Object Weight", etc. The trick is the element locations move from file to file. For example, "File Name" element may be located at 0 in one file and then 15 in the next file. I need to find the exact location of my desired elements and save them to a variable. Then use that variable to locate the exact piece of data in the text file line to place in my new row.
The code below obviously doesn't work, but it kind of illustrates what I need to have done.
Try
With dt
.Columns.Add("fltObjectWeight", Type.GetType("System.Double"))
.Columns.Add("vchObjectName", Type.GetType("System.String"))
[Code].....
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Mar 13, 2011
I am trying to make a program that will be an auto-run in a game for me, the movement key is W and when i use SendKeys, it just spams W really fast (but with the KeyUps also) so my character just slowly goes and stops goes and stops. Is there a way I can just hold the W key down through VB.NET (such as just placing your finger on a key and holding it down)?
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Nov 22, 2010
I am trying to make a blackjack program and I need to execute a different piece of code each time a button is pressed by the user.
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Jan 19, 2011
I want to build a VB program that will go to a web site and pull out a specific piece of data.I am using VB Express 2010 not sure if it belongs in this .net forum.I am successfully getting to the website using WebBrowser.navigate()The data is provided to me in XML format and I am told that it is ready to be retrieved. They tell me to use XML Parser.When I go to their web site I see the data I need to pull out there is a column with tags in front of each piece, the piece I need is between <Vr0> and </Vr0>.I have no resources other than the net currently I do have a dummies book ordered but will be at least next week (at the earliest) before my first book arrives.Can you explain how I can sort through the data and pull out the data in XML format on a web site?
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Apr 15, 2010
I have a database called "IMYS" and a "Customers" table in it. What I want to do is: Define a variable like "Last_Name" and retrieve last names of customers one by one. I've tried this before (and, it doesn't work for me):
===
Dim Last_Name as String
Dim I, K as Integer
Dim CustomersTable = New IMYSDataSetTableAdapters.CustomersTableAdapter
[Code]....
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May 3, 2010
I have a bit of a problem. I am using an Access database to hold data for my VB app. In the VB app, I have a data source thats pulling data from the database.
I modified the database today, deleted some tables, added another one, but the data source in the project window does not show these updated changes. I had to reconfigure the datasource with the wizard to get the changes to update.
Is there a way that i can get the data source to update itself when the form loads?
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Oct 13, 2011
I'm not sure if this is a simple problem or not but it's frustrating me to no end.
I'm using the following code to add my data to the database, and then this to refresh. [code]...
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Aug 10, 2011
I want to store the contents of an XMl file into an array but struggling to work this out. I have managed to read the data in and store in labels as a test. I then created an array list and used a message box to display the data to see that it has been stored. It does but I am not sure how to group this data. There are 3 records in the file. the idea is to end up with the following:
[Code]...
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Jul 23, 2010
Is it possible to use ACCESS DB (MDB) on a SERVER. I would like to use the MDB file to hold my DATA. Has any1 used a multi user vb.net program with Access DB residing on a SERVER? I am just trying out something and do not want to use SQL SERVER for this project.
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Oct 28, 2010
How to print nice Drawings and things... All i want to do is send the data from a simple textbox to a piece of paper. I understand how to do page setup and such.. The only thing i don't know is how to actually set up the page.
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Jul 20, 2010
The problem is, I've never created a class before, not in VB, Java, or anything. I know all the terms associated with classes, I understand at a high level how classes work no problem. But I suck at the actual details of making one.[code]...
As for the Getter and Setter, the reason I put the question marks in is because I want to return the whole array there. The class will eventually have other properties which are basically permutations of the same data, but this is the full set that I will use when I want to save it out or something. Now I want to return the whole Array, but typing "Return fullDataSet()" doesn't seem like a good idea. I mean, the name of the property is "fullDataSet()." It will just make some kind of loop. But there is no other data to return.
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Apr 21, 2009
How would i declare an array which would eventually hold data as follows:
Arr = [ _
[ 0, 0, 0, 0, 0, 0, 0, 0], _
[ 0,101,101,101,101,101,101, 0], _
[Code].....
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Sep 26, 2011
I keep getting an over flow.I have two longs. The first is set to 16552800. I can add 32760 to it no problem. However I get an overflow error when I add 32820 to is.
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Mar 4, 2010
I have a database table of company information.It's about 50 records and contains things like company id, company name, address, phone number, shipping rate1, shipping rate2,etc.I want to load that table into a structure that I can quickly search within my code.I want to search by id to find the company, and then use the company's data to update some records.My lazy way has always been to add a listbox for each piece of data, then do an indexof on the id, then access the same index on the other listboxes.[code]
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Jul 21, 2011
What is the numeric data type that can hold the biggest Integer in VB.NET 2010?
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Dec 15, 2010
I have an interface 'ICRUDable' and a class called ClientAddress which implements the ICRUDable interface.
My understanding of OOP would lead me to believe that if I declare a System.Data.Linq.Table(Of ICRUDable) then I should be able to put ClientAddress's in there.
The code I have tried includes;
Dim dc As New CRMDataContext
Dim items = dc.ClientAddresses
and
[Code]....
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Sep 5, 2010
Using Visual Basic 2008 Express. I need to pass a variable to another form. Or else make the variable visible to both forms.
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Apr 22, 2011
I'm trying to, from a client-side piece, call off to a server-side piece. I need to do this synchronously. On my server-side code, though, I'm calling off to another piece of code, which I want to have a maximum of, say, 10 seconds to return a value. If I don't have a response within 10 seconds, I want to force my own server piece to set my result equal to 0, and return to the client.
Here's what I have on my server-side code so far:
Public Function GetWebResult(ByVal inputParameter As Object) As WebReturnObject Implements IWebInterface.GetWebResult
Dim result As New WebReturnObject
Dim webItem As WebItem = Nothing
[CODE]...
I realize this code is not functional. The problem is that I'm unsure how I would go about getting back into GetWebResult to set the appropriate return values before it is sent back to the client.
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Jan 20, 2011
I have three table and I want to put the three table's data in one variable and from that variable i will produce the datatable and then want to write the data in CSV file.I am Following this step..
Void
GetDetails()
DataClasses1DataContext
[code].....
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Feb 17, 2011
I have a VBA form in Microstation I am using to try and help automate a task. The only problem I am having is I am reading a textbox (Filebox.Text) and setting it as the variable (FN). It works, because I used Msg.Box (FN) to test it. However, in two of the lines of code, I am trying to use (FN) to pass the typed in filename to the command to run in Microstation. Unfortunently, it gets passed on as (FN).dgn instead of the actual filenale typed into the textbox. Is there a way I can make the variable actually seen as a variable? Code on Pastebin: url....Also, not sure if this is the right section, 100% new to VBA, coming from a world Bashed together.
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Feb 4, 2010
How can I store the value of a variable into another variable that wont be changed unless it meets certain criteria
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